Elevator for sucker-rods



(No Model.) 7

- G. 0. STOVER.

ELEVATOR FOR STICKER RODS. No. 359,291. PatentedMar. 15, 1887.

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OOCHRAN G. STOVER, OF BRADFORD, PENNSYLVANIA.

ELEYATOR FOR SUCKER-RODS.

SPECIFICATION forming part of Letters Patent No. 359,291, dated March15, 1887.

Application filed December 3, 1884. Renewed December-9, 1886. Serial No.221,149. (No model.)-'

' to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

Figure 1 is a front view of my improvement; Fig. 2,a side view. Figs. 3,4, 5, and 6 are detailed views of parts of the elevator.

The object of this invention is an improve: ment in sucker rod elevatorsin common use in the oil regions and at Artesian wells; and myimprovement consists in the peculiar construction of the bail and itscombination with the finger and swinging wrench, as hereinafter moreparticularly set forth and claimed.

The said bail is provided with the wrench E, which is slotted to receivethe squared end of the sucker-rod joint. This wrench E is so mounted inthe arms B B that the arms can be swung vertically or horizontally, andwhen the arms are in the latter position free access is afforded to theslot in the swinging wrench E; but when the arms stand vertically, as inFigs. 1 and2, the entrance to the slot in the swinging wrench E isclosed by the finger O. This finger O is so bent and mounted that it hasa tendency to crowd the sucker-rod into therecess when theshank isthrown up into its vertical position.-

The bail of the elevator, by which it is raised,

is composed of the arms B B, the shank A, and the swivel-loop F, towhich it is connected by screw a. The shank A has two screw-threadedholes, a a drilled in itto receive the threaded end b of the arm B, andthose arms are firmly screwed into the shank. The finger Chas two sidegrooves, 0', into which fit the arms B, and said finger O is firmlyfastened between those arms by the iron ring D, which is heated and thendriven down over the arms until they are forced into the grooves c inthe finger O, and when cool its shrinking firmly binds the arms B B intothe finger O. This heating of the ring D can be done by placing thatpart of the apparatus over which the ring is in the fire after the partsare placed in position.

I am aware that it is not new to provide a sucker-rod elevator with apivoted wrench and a finger for closing the opening in said wrench, andI therefore do not claim the same. i What I claim as my inventionis-- 1. In combination with the pivoted wrench E and the removablefinger 0, having grooves c and c, the yoke having arms B, which fit intogroove 0, and ring D, which fits into grooves c, substantially as setforth.

and the removable finger, the yoke having arms and the ring which slipsover said arms and causes them to grasp the finger, substantially as setforth.

OOOHBAN O. STOVER.

Witnesses:

J AMES 0. BOYCE, KENTON SAULNIER;

2. In combination with the pivoted wrench v

